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slirp: Implement RFC2132 TFTP server name

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This new usernet option can be used to add data for option 66 (tftp
server name) in the BOOTP reply, which is useful in PXE based automatic
OS install such as OpenBSD.

Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Tested-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
This commit is contained in:
Fam Zheng 2018-09-14 15:26:16 +08:00 • committed by Samuel Thibault
parent 6e157a0339
commit 0fca92b907
8 changed files with 38 additions and 4 deletions
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12
net/slirp.c
View file

@ -150,6 +150,7 @@ static int net_slirp_init(NetClientState *peer, const char *model,
const char *vnameserver, const char *vnameserver6,
const char *smb_export, const char *vsmbserver,
const char **dnssearch, const char *vdomainname,
const char *tftp_server_name,
Error **errp)
{
/* default settings according to historic slirp */
@ -360,6 +361,11 @@ static int net_slirp_init(NetClientState *peer, const char *model,
return -1;
}
if (tftp_server_name && strlen(tftp_server_name) > 255) {
error_setg(errp, "'tftp-server-name' parameter cannot exceed 255 bytes");
return -1;
}
nc = qemu_new_net_client(&net_slirp_info, peer, model, name);
snprintf(nc->info_str, sizeof(nc->info_str),
@ -370,7 +376,8 @@ static int net_slirp_init(NetClientState *peer, const char *model,
s->slirp = slirp_init(restricted, ipv4, net, mask, host,
ipv6, ip6_prefix, vprefix6_len, ip6_host,
vhostname, tftp_export, bootfile, dhcp,
vhostname, tftp_server_name,
tftp_export, bootfile, dhcp,
dns, ip6_dns, dnssearch, vdomainname, s);
QTAILQ_INSERT_TAIL(&slirp_stacks, s, entry);
@ -907,7 +914,8 @@ int net_init_slirp(const Netdev *netdev, const char *name,
user->ipv6_host, user->hostname, user->tftp,
user->bootfile, user->dhcpstart,
user->dns, user->ipv6_dns, user->smb,
user->smbserver, dnssearch, user->domainname, errp);
user->smbserver, dnssearch, user->domainname,
user->tftp_server_name, errp);
while (slirp_configs) {
config = slirp_configs;